code: def main():
      parser = argparse.ArgumentParser(
          description="interact with VW in active learning mode"
      )
      parser.add_argument("-s", "--seed", help="seed labeled dataset")
      parser.add_argument("-o", "--output", help="output file")
      parser.add_argument(
          "-u",
          "--human",
          help="human readable examples in this file (same # of lines as unlabeled); use with -v",
      )
      parser.add_argument(
          "-v",
          "--verbose",
          action="store_true",
          help="show example (in addition to tag)",
      )
      parser.add_argument(
          "-m",
          "--minus1",
          action="store_true",
          help="interpret 0 as -1",
      )
      parser.add_argument(
          "-k",
          "--keypress",
          action="store_true",
          help="don't require 'Enter' after keypresses",
      )
      parser.add_argument("host", help="the machine VW is running on")
      parser.add_argument(
          "port", type=int, help="the port VW is listening on"
      )
      parser.add_argument(
          "unlabeled_dataset", help="file with unlabeled data"
      )
      args = parser.parse_args()
  
      input_fn = input
      if args.keypress:
          getch = try_find_getch()
  
          def raw_input_keypress(str: str) -> str:
              print(str, end="")
              return getch()
  
          input_fn = raw_input_keypress
  
      check_file_exists(args.unlabeled_dataset, "r")
      if args.seed is not None:
          check_file_exists(args.seed, "r")
      if args.human is not None:
          check_file_exists(args.human, "r")
      if args.output is not None:
          check_file_exists(args.output, "w")
  
      # Create a socket
      with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
          # Connect to server and perform handshake
          print("Connecting to {}:{}...".format(args.host, args.port))
          sock.connect((args.host, args.port))
          print("Done")
  
          # Send seed dataset
          if args.seed is not None:
              print("Seeding vw...")
              with open(args.seed, "r") as seed_file:
                  for line in seed_file:
                      send_example(sock, line)
                      sock.sendall(line.encode(TEXT_ENCODING))
                      recvall(sock, 256)
              print("Done")
  
          # Send unlabeled dataset
          print("Sending unlabeled examples...")
          with open(args.unlabeled_dataset, "r") as unlabeled:
              with open_if_not_none(args.human, "r") as human:
                  with open_if_not_none(args.output, "w") as output:
                      active_process_unlabeled_dataset(
                          sock=sock,
                          unlabeled=unlabeled,
                          input_fn=input_fn,
                          minus1=args.minus1,
                          verbose=args.verbose,
                          human=human,
                          output=output,
                      )
  
file_path: vowpal_wabbit/utl/active_interactor.py
imports: import socket
  import argparse
  from typing import Callable, ContextManager, Optional, TextIO
  import contextlib
label_desc: Use image node_id 11 for calling a global function with example usage: main() and returns: getch